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प्रश्न
What are fuels?
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उत्तर
Fuels: The substances which burn in air to produce a large amount of energy in the form of heat and light are called fuels.
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संबंधित प्रश्न
What are the causes of air pollution?
Fill in the blanks :
_______ and ______ are the most common air pollutants.
Name and briefly explain four ways by which pollution of air is caused by humans.
Classify Carbon dioxide. Also give a balanced equation to prepare it.
Name the components of air with their approximate percentage by volume in air. Does the percentage by volume of each component remain the same, in the atmosphere of different parts of the world? Explain with reasons.
Name the following:
The main, rare (inert) gas present in air.
______ is the active component of air.
Air also contains a small amount of carbon-di-oxide, water vapour, and some other gases like argon,
Carbon dioxide gas is ______ in nature.
Match the following
| 1. | Nitrogen | a. | Acid rain |
| 2. | CO2 | b. | Global warming |
| 3. | Melting of glaciers | c. | Volcanic gases |
| 4. | Corrosion of bridges | d. | Aerated drinks |
